Title :
Compensation of transmitter distortion using a nonlinear modeling approach
Author :
Cao, H. ; Tehrani, A. Soltani ; Fager, C. ; Eriksson, T. ; Zirath, H.
Author_Institution :
Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Gothenburg
Abstract :
In this paper, a nonlinear modeling approach is used to demonstrate a joint compensation scheme for the linear and nonlinear distortions in the I/Q modulator and the power amplifier. Based on this nonlinear model, a digital pre-compensator is constructed. The effects of these two most dominant nonlinear components in a modern transmitter can therefore be digitally pre-compensated in a single step. The results are verified by experiments, and the proposed approach shows promising performance.
Keywords :
nonlinear distortion; transmitters; I/Q modulator; digital pre compensator; joint compensation scheme; nonlinear distortions; nonlinear modeling approach; power amplifier; transmitter distortion; Digital signal processing; Nonlinear distortion; OFDM modulation; Power amplifiers; Power system modeling; Predistortion; Radio frequency; Radiofrequency amplifiers; Transmitters; Wireless communication; I/Q imbalance; I/Q modulator; Volterra series; power amplifier; transmitter;
Conference_Titel :
Integrated Nonlinear Microwave and Millimetre-Wave Circuits, 2008. INMMIC 2008. Workshop on
Conference_Location :
Malaga
Print_ISBN :
978-1-4244-2645-4
Electronic_ISBN :
978-1-4244-2646-1
DOI :
10.1109/INMMIC.2008.4745734
